Stored oqparam in combine_mean_curves [skip CI]
Stored oqparam in combine_mean_curves [skip CI]


Former-commit-id: 0bec3324dc76818bbd174cabc0b7ad64f72edfc0 [formerly 6e958cf7d051f6aac529274c6ec8e6eed1a8b063]
Former-commit-id: 5596583fa3c65fe0499f3f5f19b76a52b876dee1
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine